Radiator.



PATENTED DEC. 15, 1903.

J. J. SPEAK.

RADIATDR. APPLICATION FILED MAY 29, 1903.

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JOHN J. SPEAR, OF WILMETTE, ILLINOIS, ASSIGNOR TO AMERICAN RADI- ATOR COMPANY, OF CHICAGO, JERSEY.

ILLINOIS, A CORPORATION OF NEW HADATOR.

SPECIFICATION forming part of Letters Patent No. 747,254, dated December 15, 1903.

Application filed May 29,1903. Serial No. 159,284.. (No model.)

To all whom it may concern:

Be it known that 1, JOHN J. SPEAK, a citi zen of the United States, and a resident of Wilmette, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Radiators, of which the following is a specification and which are illustrated in the accompanying drawings, forming a part thereof.

This invention relates to improvements in steam or hot-water heating apparatus, and has particular reference to a novel form of radiator consisting of a plurality of hollow sections, each of which is provided on its sides with hollow projections or bosses arranged in staggered form and in such relation or proximity to each other that the air-currents entering between the sections are readily and effectually subdivided, so that all of the air passing through the radiator is brought in contact with a heating-surface repeatedly yet Without material retardation of the flow.

Artificial means, such as a blast-fan, may be employed for forcing a blast of air to the radiator; but the invention is capable of use in connection with radiators used in the ordinary manner or located in the path of a natu ral draft.

The invention consists in the combination 3e and arrangementof parts hereinafter fully described, particularly designated in the claims, and illustrated in the accompanying drawings, in which- Figure 1 is a front view of a battery consisting of three radiator-sections. Fig. 2 is a side elevation of the same inclosed in a casing and shown in connection with a fan for forcing a blast of air through the radiator. Fig. 3 is a section on the line y y of Fig. 2. Fig. 4 is a section on the line 00 w of Fig. 2. Fig. 5 is a detail, on an enlarged scale, of one of the radiator projections. Fig. 6 relates to a modification of the radiating air-deflecting projections or bosses.

The radiator is built up of two or more sections 10. In Fig. I a battery of three vertical sections is shown, such sections being attached together at the ends by means of ordinary connections 11, so as to permit of =30 the circulation of the heating medium. The

I precise shape of the sections is not material,

but may be made to conform to the requirements of the particular radiator. Each section is provided on its side faces with hollow projections or bosses 12, which preferably open into the chamber of the section so as to be most effectively heated, and these projections 12 are so disposed with relation to each other that a sinuous or tortuous path is provided for the current of air passingbetween adjacent sections, itbeing deflected by the projections in such manner as to direct it against a large area of heating-surface provided by the walls of the projections. As shown in Fig. 2, these projections may be arranged in vertical rows, the projections of each row being staggered with respect to the projections of the adjacent row or rows. Furthermore, each alternate pair of rows may be spaced apart a distance less than the length of each projection, thereby causing an tions of adjacent rows.

The projections are preferably of the shape illustrated in Fig. 5-that LS to say, substantially elliptical-and are provided with tapered ends on their horizontal axes, so as to offer the minimum resistance to the current of air, or such projections may be diamond shape, as shown in Fig. 6.

The current of air entering between the sections of the radiator is compelled to take a sinuous path by reason of the interposition of the projections. The construction illustrated greatly increases the area of heat r-adiating surface without increasing the normal size of the body of the radiator and a maximum effect in heating the air is attained, inasmuch as the air is caused to impinge against all the projections and absorb heat rapidly and efiectively.

The radiator is particularly designed for use for hot-blast heating systems. When so used, it is inclosed in a casing 13, into which air is forced by any suitable means, such as the blower 14, and the air after having passed through the radiator-sections escapes through suitable pipes (not shown) to the various parts to be heated.

The sections 10 are connected up in such manner as to avoid the presence of any considerable space between facing projections overlapping of the adjacent ends of projec- ICO 12, thereby compelling every molecule of air to move againsta heated surface and preventing the passage of a body of air unaffected by the walls of the projections. By reason of the staggered arrangement of the projections a current of air is subdivided into innumerable fine currents, every particle of which must come in contact with a succession of projections before escaping, and thereby a Whirl or eddy is set up which will drive the molecules of air from any narrow space that may separate the ends of the projections and into contact with the walls of the latter.

I claim as my invention- 1. A radiator comprising a plurality of hollow sections secured together and each of which is provided on its face adjacent another section with a plurality of rows of hollow projections, each alternate pair of rows being spaced apart a distance less than the length of a projection, the projections being elongated in shape and provided with tapered ends and the projections of each row alternating with the projections of the adjacent row.

2. In a radiator, in combination, a plurality of radiator-sections provided with hollow projections on their adjacent faces, a casing inclosing the radiator and provided with an air-inlet directed toward the space between the sections and an outlet, the said projections having their side walls angular in contour in the line of the air-inlet, and being ar ranged in staggered form.

3. Ina radiator, in combination, a plurality of sections provided with rows of hollow projections on their adjacent faces, the proj ections of each row alternating with those of the adjacent row and each alternate pair of rows being spaced apart a distance less than the length of a projection and each vertical pair of projections being spaced apart a distance less than the width of a projection, a casing inclosing the radiator and provided with an air-inlet directed toward the spaces between the sections and an outlet, and a blast-fan for supplying air to the casing.

JOHN J. SPEAR.

Witnesses:

E. M. KLATCHER, LoUIs K. GILLsoN. 

